This hunk of rubber thinks a rubber hat or some form of headscarf would also look excellent as additions.
Perhaps a molded rubber hood and face, to appear fully rubberized as well?

This hunk of rubber suggests a gagging sequence, similar to those you have made with your art. Progressively silencing and anonymizing yourself, layer by layer.

Perfectly null.

whispering into his ear that once he cums in rubber he'll be addicted, unable to get off without crawling back to me to be encased, eventually living in it full time and wearing it under his clothes, and that the idea turns him on and all he has to do is accept it

him moaning my name as he spurts~

Indeed- particularly being at the behest of a similarly null manager or secretary, molded rubber faces then kissing and sharing a muted intimacy, blended with neutral expressions and rustling rubber. Sensual yet professional.